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Follow Up - Centos / Red Hat EL Broken 5.4 + 5.5, ** Alternative solution **
by Seth Bardash 15 Jul '10

15 Jul '10

To the list: 1) Someone off the list (thanks!) offered to send me an RT kernel based on 2.6.23.X. So I thought why not try to build a standard / server type based on the standard 2.6.23 version. 2) Red Hat 6 Beta 2 is based on a similar starting point 3) I was not going to fix something Red Hat broke. They responded to me that they only support the configuration of the generic binary they ship. This is the answer I received from them for bug # 558367 "Jarod Wilson 2010-07-14 13:40:06 EDT Officially, Red Hat does not support rebuilds of its kernel with configurations other than the one Red Hat ships. You're welcome to submit a patch to fix the build, which will be considered for inclusion, and/or wait for someone here to have the time to work on this, but there are only so many hours in the day. Most of Red Hat engineering is busy working on problems related to configurations that Red Hat *does* support. If this is a particularly serious issue for you though, you're welcome to try to escalate it through customer support. " /Flame proof on This answer brings to light some very serious limitations. First, if you want to turn on a standard kernel feature and its broken (like what I tried), it is not officially supported by Red Hat nor Centos. Therefore, xfs, ntfs, and many other features quite a few of us use may be broken at any time when the upstream provider "fixes or updates" a kernel. /Flame proof off/ I am just stating a warning based on an official answer. NO OPINION OFFERED OR IMPLIED Now for the fix.... No, it was not me that fixed this. I just thought maybe we should try a kernel that has been thoroughly tested by the "kernel people". I used the kernel.org, 2.6.23.17 kernel I used the old .config from the latest Centos 5.5 src.rpm Ran make oldconfig I answered most new questions with the default I enabled AMD Opteron, Disabled optimize for size and changed the default CPU frequency governor to performance. I turned off isdn, infiniband, ATM and a few others (we don't use them) I turned on NTFS and with writes (it was broken in 5.2), xfs and jfs then make; make install_modules mkinitrd ; edit grub; reboot This seems to work fine on a standard Centos 5.5 x86_64 install. I am going to run this on a test server for a few weeks and see how well it works. If I see any issues I will report them but so far it works just fine -- Seth Bardash Integrated Solutions and Systems LLC A Metso IT Consultant 719-495-5866 Shop Phone 719-386-0218 Metso Phone 719-337-4779 Cell seth(a)integratedsolutions.org Failure cannot survive knowledge and perseverance!

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error: _IceTransSocketUNIXConnect: Cannot connect to non-local host [hostname]
by ken 15 Jul '10

15 Jul '10

When launching oowriter and other apps, I get this error: _IceTransSocketUNIXConnect: Cannot connect to non-local host myh.dom.tld The app -- oowriter or whatever I happen to be invoking-- starts okay. But this error message tells me something's not right. Curiously, the "hostname" command yields "myhost", but "hostname -f" yields "localhost.localdomain". Doing "ifconfig eth0" specifies the correct IP address for this system. And the listing in /etc/hosts for that IP address does specify myh.dom.tld. -- Find research and analysis on US healthcare, health insurance, and health policy at: <http://healthpolicydaily.blogspot.com/>

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Linux Kernel Physical Interface Limit
by William Warren 15 Jul '10

15 Jul '10

I think it's baloney mainly because i can't find a mention of it anywhere. Is there REALLY a limit on the number of physical network interfaces in the Kernel?

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GPT Partitions >2.2T with Centos 5.5
by Jens Neu 15 Jul '10

15 Jul '10

Dear all, unfortunately I observe drastic drops in read- performance when I connect LUNs >2.2T to our Centos 5.5 Servers. I suspect issues with the GUID Partition Table, since it happens reproducibly only on the LUNs >2.2T and goes back to normal performance when using a LUN <2T with "normal", Legacy MBR partitions. All machines are CentOS 5.5 (and RHEL 5.5) on IBM Blades LS21/LS41, all LUNs via Brocade 4G FC Switches from a SUN 7310 Unified Storage, EXT3 filesystems with standard settings. Any hints? regards Jens

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Unloking gnome keyring on login
by Giulio Troccoli 15 Jul '10

15 Jul '10

I hope someone can help me because I have spent a week on this and still I can't make it to work. I have a CentOS 5.5 server and I am trying to set it up so that upon login the gnome default keyring is unlocked. I don't have a desktop as users will login using ssh only. I have search the forum and google it, and I did find some help. All the articles though said to change /etc/pam.d/gdm (which I think is for the Gnome Desktop Manager). I did it anyway but no joy. I tried changin /etc/pam.d/login, and no joy. I'm becoming a bit desperate. The changes I have done are to add auth optional pam_keyring.so (sometimes with try_first_pass) and session optional pam_keyring.so auto_start (sometimes without auto_start) All the time the gnome-keyring-daemon is not started. But even if I start it at login, with a new /etc/prodile.d/gnome-keyring-daemon.sh script which runs export `/usr/bin/gnome-keyring-daemon`, the keyring is not unlocked at login. Just to let you know, I use the keyring to store passwords for a Subversion repository. The first time, after logging in, I use Subversion I am asked for the password to unlock the keyring. Then everything goes fine, i.e. I'm not ask for the Subversion password. After I sorted this out I need to set the server so that the keyring password is changed automatically when the user changes his login password (I tried alread, changing /etc/pam.d/passwd similarly as I've done above but it's not working) So, please can anyone help me? Thanks Giulio Linedata Limited Registered Office: 85 Gracechurch St., London, EC3V 0AA Registered in England and Wales No 3475006 VAT Reg No 710 3140 03

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free
by Jason Pyeron 14 Jul '10

14 Jul '10

The man page does not say much, but does this mean I have only 396668 used by programs (used-cached)? Or shoul I be reading the 2nd line? [root@ten-212 ~]# free total used free shared buffers cached Mem: 7918844 5478820 2440024 0 111684 5082152 -/+ buffers/cache: 284984 7633860 Swap: 9961464 204 9961260 -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

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os that rather uses the gpu?
by Jozsi Avadkan 14 Jul '10

14 Jul '10

Does someone know a distribution/operating system, that rather uses the GPU for "working", not the CPU? [by default] Or this solution is still in the "beginning part"? Thanks for any tips, link, suggestions.

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Re: [CentOS] GPT Partitions >2.2T with Centos 5.5
by Alexander Dalloz 14 Jul '10

14 Jul '10

>> I think ext3 is a bit slow on so big LUNS, try xfs or similar? > > there is no official support for xfs in RHEL5, so that is not an option. > Besides, I'm talking about a drop of >150mb/s to ~10mb/s read performance > when cracking the 2.2T size. This is clearly not in the ext3 (or FS for > that matter) magnitude of performance issues. Also, numbers stay the same > when dd'ing on the raw device (LUN). > > -Jens Hello Jens, I always used LVM to make LUNs from a NetApp SAN available to CentOS/RHEL 4/5 systems. Administrating several systems with multiple LUNs of +2.2TB and not seeing such a negative performance impact. Filesystem used is ext3. Regards Alexander

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Re: [CentOS] Running yum shows errors
by Jens Neu 14 Jul '10

14 Jul '10

Hi, Did you try to disable the mirror selection and specify one single repo? -Jens ----- Originalnachricht ----- Von: Jatin Davey [jashokda(a)cisco.com] Gesendet: 14.07.2010 11:03 ZE5B An: centos(a)centos.org Betreff: [CentOS] Running yum shows errors Hi I am getting the following errors when i try to use yum to install the net-snmp paclages. [root@sc1 yum.repos.d]# yum install net-snmp Loaded plugins: fastestmirror Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 229, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 104, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 339, in doCommands self._getTs(needTsRemove) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in _getTs self._getTsInfo(remove_only) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in _getTsInfo pkgSack = self.pkgSack File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 591, in <lambda> pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 434, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.4/site-packages/yum/repos.py", line 223, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 71, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 176, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 176, in postreposetup_hook if downgrade_ftp and _len_non_ftp(repo.urls) == 1: File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 585, in <lambda> urls = property(fget=lambda self: self._geturls(), File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 582, in _geturls self._baseurlSetup() File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 538, in _baseurlSetup mirrorurls.extend(self._getMirrorList()) File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1349, in _getMirrorList fo = urlgrabber.grabber.urlopen(url, proxies=self.proxy_dict) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 612, in urlopen return default_grabber.urlopen(url, **kwargs) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 891, in urlopen return self._retry(opts, retryfunc, url) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 852, in _retry r = apply(func, (opts,) + args, {}) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 890, in retryfunc return URLGrabberFileObject(url, filename=None, opts=opts) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1008, in __init__ self._do_open() File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1091, in _do_open fo, hdr = self._make_request(req, opener) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1204, in _make_request fo = opener.open(req) File "/usr/lib/python2.4/urllib2.py", line 358, in open response = self._open(req, data) File "/usr/lib/python2.4/urllib2.py", line 376, in _open '_open', req) File "/usr/lib/python2.4/urllib2.py", line 337, in _call_chain result = func(*args) File "/usr/lib/python2.4/urllib2.py", line 573, in <lambda> lambda r, proxy=url, type=type, meth=self.proxy_open: \ File "/usr/lib/python2.4/urllib2.py", line 580, in proxy_open if '@' in host: TypeError: iterable argument required Please let me know what needs to be done. Thanks Jatin _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos http://www.biotronik.com * * * * * * * * BIOTRONIK SE & Co. KG Woermannkehre 1, 12359 Berlin, Germany Sitz der Gesellschaft: Berlin, Registergericht: Berlin HRA 6501 Vertreten durch ihre Komplementärin: BIOTRONIK MT SE Sitz der Gesellschaft: Berlin, Registergericht: Berlin HRB 118866 B Vorsitzender des Verwaltungsrats: Dr. Max Schaldach Geschäftsführende Direktoren: Christoph Böhmer, Dr. Werner Braun, Dr. Lothar Krings * * * * * * * * BIOTRONIK - A global manufacturer of advanced Cardiac Rhythm Management systems and Vascular Intervention devices. Quality, innovation, and reliability define BIOTRONIK and our growing success. We are innovators of technologies like the first wireless remote monitoring system - Home Monitoring®, Closed Loop Stimulation and coveted lead solutions as well as state-of-the-art stents, balloons and guide wires for coronary and peripheral indications. We highly invest in the development of drug eluting devices and are leading the industry with our bioabsorbable metal stent program. * * * * * * * * This e-mail and the information it contains including attachments are confidential and meant only for use by the intended recipient(s); disclosure or copying is strictly prohibited. If you are not addressed, but in the possession of this e-mail, please notify the sender immediately and delete the document.

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Running yum shows errors
by Jatin Davey 14 Jul '10

14 Jul '10

Hi I am getting the following errors when i try to use yum to install the net-snmp paclages. [root@sc1 yum.repos.d]# yum install net-snmp Loaded plugins: fastestmirror Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 229, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 104, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 339, in doCommands self._getTs(needTsRemove) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in _getTs self._getTsInfo(remove_only) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in _getTsInfo pkgSack = self.pkgSack File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 591, in <lambda> pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 434, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.4/site-packages/yum/repos.py", line 223, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 71, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 176, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 176, in postreposetup_hook if downgrade_ftp and _len_non_ftp(repo.urls) == 1: File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 585, in <lambda> urls = property(fget=lambda self: self._geturls(), File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 582, in _geturls self._baseurlSetup() File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 538, in _baseurlSetup mirrorurls.extend(self._getMirrorList()) File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1349, in _getMirrorList fo = urlgrabber.grabber.urlopen(url, proxies=self.proxy_dict) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 612, in urlopen return default_grabber.urlopen(url, **kwargs) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 891, in urlopen return self._retry(opts, retryfunc, url) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 852, in _retry r = apply(func, (opts,) + args, {}) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 890, in retryfunc return URLGrabberFileObject(url, filename=None, opts=opts) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1008, in __init__ self._do_open() File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1091, in _do_open fo, hdr = self._make_request(req, opener) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1204, in _make_request fo = opener.open(req) File "/usr/lib/python2.4/urllib2.py", line 358, in open response = self._open(req, data) File "/usr/lib/python2.4/urllib2.py", line 376, in _open '_open', req) File "/usr/lib/python2.4/urllib2.py", line 337, in _call_chain result = func(*args) File "/usr/lib/python2.4/urllib2.py", line 573, in <lambda> lambda r, proxy=url, type=type, meth=self.proxy_open: \ File "/usr/lib/python2.4/urllib2.py", line 580, in proxy_open if '@' in host: TypeError: iterable argument required Please let me know what needs to be done. Thanks Jatin

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